Bill Walsh is frequently credited as the genius behind the West Coast Offense for the sick units he produced with the 49ers in the '80s. But, as Scout.com's Jeremy Stoltz points out, it predated him significantly in a Coaching tree that included Coach Joe Gibbs, among others. The entire article is a fascinating exploration of where the West Coast Offense came from, how it worked (revolutionary pass opening up the run, as opposed to the other way around), and where it's going. I won't bother posting the entire thing, but the bits relevant to Redskins fans are entertaining:
Another of Joe Gibbs innovations was the addition of an entirely new position: The H-Back. Typically referred to as a hybrid Fullback/Tight End, the position requires the versatility of both. H-Backs line up in the backfield (to pass protect, run block, or go out on routes) or at the line where a traditional Tight End might be.
We discussed the Coryell-Gibbs Coaching Tree last August which, incidentally, also included current Redskins OC Al Saunders. If you're interested, take a gander.